| 摘要 |
PROBLEM TO BE SOLVED: To provide a lightweight fire resisting insulation cement mortar, which contains pearlite as a lightweight aggregate, and can sufficiently suppress the separation of the materials.SOLUTION: The lightweight fire resisting insulation cement mortar includes a cement, pearlite, water and an additive to suppress the separation of these. The additive contains hydroxypropyl methylcellulose and calcium aluminate. The additive is a solution in which hydroxypropyl methylcellulose and calcium aluminate are dissolved in water. The ratio of hydroxypropyl methylcellulose/cement is in the range of 0.1 to 5 wt.%; and the ratio of calcium aluminate/cement is in the range of 0.01 to 5 wt.%. |
